#include<stdio.h>
int main()
{ 
	char c1='a',c2='b',c3='c',c4='\101' ,c5='\116' ; 
	printf("a%c b%c\tabc%c\n",c1,c2,c3); 
	printf("\t\b%c %c",c4,c5);
	return 0;
} 
